CSS :: Organic Evolution Theories
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By illustrating the examples of African giraffe and snakes Lamarck emphasized mainly that:
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Nature selects the forms which are fittest in the struggle for existence | [B]. |
Development and efficiency of body organs are an proportion to their use and disuse
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| [C]. |
Variations (environmental or mutations) are respobsible for process of organic evolution | [D]. |
The organisms have enormous fertility leading to over production but their number is always kept constant by the nature |
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